Links:
Just Car Audio - The Ultimate Car Audio Adventure - Subwoofers / Amplifiers
Car Audio / MA Audio - Breakin All The Rules - Car Audio Manufacturer
eBay Listings: Audio, Auto
car audio at SoundDomain.com - the leading car stereo resource!
Crutchfield
AIM Home
JC Whitney, Inc.
Jeg's High Performance OnLine
K&N Engineering, Inc
Flowmaster Mufflers
Kenwood Communications Corporation